import java.util.Arrays;

public class a {
    public static void main(String[] args) {

        int[] arr={1,2,3,4,5,6,7,8};
        arr= Arrays.copyOf(arr,2*arr.length);
        for (int i = 0; i <arr.length ; i++) {
            System.out.println(arr[i]);
        }
    }
}